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 ###Instrução: Qual foi a data da nomeação do gerente substituído, Reiner Geyer?
 ###Tabelas: CREATE TABLE details (details_id AUTO_INCREMENT PRIMARY KEY, LMS 1932/3 No. INT, LMS 1946 No. INT, BR No. INT, Date built VARCHAR, Date motor gear fitted VARCHAR, Withdrawn VARCHAR) CREATE TABLE standard_gauge_designs_1870_to_1899 (standard_gauge_designs_1870_to_1899_id AUTO_INCREMENT PRIMARY KEY, Railway VARCHAR, Built INT, Wheels VARCHAR, Location VARCHAR, ObjectNumber VARCHAR) CREATE TABLE 2013–14_season (2013–14_season_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Position in 2012–13 VARCHAR, First season in top division VARCHAR, Number of seasons in top division INT, First season of current spell in top division VARCHAR, Top division titles INT, Last top division title VARCHAR) CREATE TABLE television (television_id AUTO_INCREMENT PRIMARY KEY, Analog Channel VARCHAR, Digital Channel VARCHAR, Call sign VARCHAR, Name VARCHAR, Network VARCHAR) CREATE TABLE managerial_changes (managerial_changes_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Outgoing manager VARCHAR, Manner of departure VARCHAR, Date of vacancy VARCHAR, Replaced by VARCHAR, Date of appointment VARCHAR, Position in table VARCHAR)  
SELECT Date of appointment FROM managerial_changes WHERE Replaced by = reiner geyer